Enable golang-ci linter in the project

.gitattributes

@@ -0,0 +1 @@
+*.go text eol=lf

.github/workflows/golangci-lint.yml

@@ -0,0 +1,45 @@
+name: golangci-lint
+on:
+  push:
+    tags:
+      - v*
+    branches:
+      - master
+      - main
+  pull_request:
+permissions:
+  contents: read
+  # Optional: allow read access to pull request. Use with `only-new-issues` option.
+  # pull-requests: read
+jobs:
+  golangci:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v2
+        with:
+          # Optional: version of golangci-lint to use in form of v1.2 or v1.2.3 or `latest` to use the latest version
+          version: v1.42
+
+          # Optional: working directory, useful for monorepos
+          # working-directory: somedir
+
+          # Optional: golangci-lint command line arguments.
+          # args: --issues-exit-code=0
+
+          # Optional: show only new issues if it's a pull request. The default value is `false`.
+          # only-new-issues: true
+
+          # Optional: if set to true then the action will use pre-installed Go.
+          # skip-go-installation: true
+
+          # Optional: if set to true then the action don't cache or restore ~/go/pkg.
+          # skip-pkg-cache: true
+
+          # Optional: if set to true then the action don't cache or restore ~/.cache/go-build.
+          # skip-build-cache: true
+      - name: errors
+        run: golangci-lint run
+        if: ${{ failure() }}

cmd/iscsiplugin/main.go

@@ -33,12 +33,11 @@ var (
 )
 
 func init() {
-	flag.Set("logtostderr", "true")
+	flag.Set("logtostderr", "true") //nolint:errcheck
 }
 
 func main() {
-
-	flag.CommandLine.Parse([]string{})
+	flag.CommandLine.Parse([]string{}) //nolint:errcheck
 
 	cmd := &cobra.Command{
 		Use:   "iscsi.csi.k8s.io",
@@ -53,10 +52,16 @@ func main() {
 	cmd.Flags().AddGoFlagSet(flag.CommandLine)
 
 	cmd.PersistentFlags().StringVar(&nodeID, "nodeid", "", "node id")
-	cmd.MarkPersistentFlagRequired("nodeid")
+	err := cmd.MarkPersistentFlagRequired("nodeid")
+	if err != nil {
+		return
+	}
 
 	cmd.PersistentFlags().StringVar(&endpoint, "endpoint", "", "CSI endpoint")
-	cmd.MarkPersistentFlagRequired("endpoint")
+	err = cmd.MarkPersistentFlagRequired("endpoint")
+	if err != nil {
+		return
+	}
 
 	if err := cmd.Execute(); err != nil {
 		fmt.Fprintf(os.Stderr, "%s", err.Error())

pkg/iscsi/driver.go

@@ -29,7 +29,6 @@ type driver struct {
 	nodeID   string
 	version  string
 	endpoint string
-	ns       *nodeServer
 	cap      []*csi.VolumeCapability_AccessMode
 	cscap    []*csi.ControllerServiceCapability
 }
@@ -99,5 +98,4 @@ func (d *driver) AddControllerServiceCapabilities(cl []csi.ControllerServiceCapa
 
 	d.cscap = csc
 
-	return
 }

pkg/iscsi/server.go

@@ -53,8 +53,6 @@ func (s *nonBlockingGRPCServer) Start(endpoint string, ids csi.IdentityServer, c
 	s.wg.Add(1)
 
 	go s.serve(endpoint, ids, cs, ns)
-
-	return
 }
 
 func (s *nonBlockingGRPCServer) Wait() {